<html>
    <head>
        <link rel="stylesheet" type="text/css" href="jquery-ui.css">
        <script src="external/jquery/jquery.js"></script>
        <script src="jquery-ui.js"></script>
    </head>
    <body>
     <p><a>Hello</a></p>
     <script type="text/javascript">
     $(function(){
        $('a').button().click(function(){alert('Hello jQuery UI');});
     });
     </script>
    </body>
</html>